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arduino-snmp-pdu.ino
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/**
* Agentuino SNMP Agent Library Prototyping...
*
* Copyright 2010 Eric C. Gionet <[email protected]>
*
*/
#include <Streaming.h> // Include the Streaming library
#include <EtherCard.h> // Include the Ethernet library
#include <MemoryFree.h>
#include <Agentuino.h>
#include <EEPROM.h>
//#define DEBUG
static byte mymac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };
#define STATIC 1 // set to 1 to disable DHCP (adjust myip/gwip values below)
#if STATIC
static byte myip[] = { 192, 168, 1, 200 };
static byte gwip[] = { 192, 168, 1, 1 };
#endif
//static byte subnet[] = { 255, 255, 255, 0 };
//
// tkmib - linux mib browser
//
// RFC1213-MIB OIDs
// .iso (.1)
// .iso.org (.1.3)
// .iso.org.dod (.1.3.6)
// .iso.org.dod.internet (.1.3.6.1)
// .iso.org.dod.internet.mgmt (.1.3.6.1.2)
// .iso.org.dod.internet.mgmt.mib-2 (.1.3.6.1.2.1)
static const char mib2[] PROGMEM = "1.3.6.1.2.1";
// .iso.org.dod.internet.mgmt.mib-2.system (.1.3.6.1.2.1.1)
// .iso.org.dod.internet.mgmt.mib-2.system.sysDescr (.1.3.6.1.2.1.1.1)
static const char sysDescr[] PROGMEM = "1.3.6.1.2.1.1.1"; // read-only (DisplayString)
// .iso.org.dod.internet.mgmt.mib-2.system.sysObjectID (.1.3.6.1.2.1.1.2)
static const char sysObjectID[] PROGMEM = "1.3.6.1.2.1.1.2"; // read-only (ObjectIdentifier)
// .iso.org.dod.internet.mgmt.mib-2.system.sysUpTime (.1.3.6.1.2.1.1.3)
static const char sysUpTime[] PROGMEM = "1.3.6.1.2.1.1.3"; // read-only (TimeTicks)
// .iso.org.dod.internet.mgmt.mib-2.system.sysContact (.1.3.6.1.2.1.1.4)
static const char sysContact[] PROGMEM = "1.3.6.1.2.1.1.4"; // read-write (DisplayString)
// .iso.org.dod.internet.mgmt.mib-2.system.sysName (.1.3.6.1.2.1.1.5)
static const char sysName[] PROGMEM = "1.3.6.1.2.1.1.5"; // read-write (DisplayString)
// .iso.org.dod.internet.mgmt.mib-2.system.sysLocation (.1.3.6.1.2.1.1.6)
static const char sysLocation[] PROGMEM = "1.3.6.1.2.1.1.6"; // read-write (DisplayString)
// .iso.org.dod.internet.mgmt.mib-2.system.sysServices (.1.3.6.1.2.1.1.7)
static const char sysServices[] PROGMEM = "1.3.6.1.2.1.1.7"; // read-only (Integer)
//
static const char enterprises[] PROGMEM = "1.3.6.1.4.1";
static const char outlets[] PROGMEM = "1.3.6.1.4.1.318.1.1.4.4.2.1.3.";
static const char outlets1[] PROGMEM = "1.3.6.1.4.1.318.1.1.4.4.2.1.3.1";
static const char outlets2[] PROGMEM = "1.3.6.1.4.1.318.1.1.4.4.2.1.3.2";
static const char outlets3[] PROGMEM = "1.3.6.1.4.1.318.1.1.4.4.2.1.3.3";
static const char outlets4[] PROGMEM = "1.3.6.1.4.1.318.1.1.4.4.2.1.3.4";
static const char outlets5[] PROGMEM = "1.3.6.1.4.1.318.1.1.4.4.2.1.3.5";
static const char outlets6[] PROGMEM = "1.3.6.1.4.1.318.1.1.4.4.2.1.3.6";
static const char outlets7[] PROGMEM = "1.3.6.1.4.1.318.1.1.4.4.2.1.3.7";
static const char outlets8[] PROGMEM = "1.3.6.1.4.1.318.1.1.4.4.2.1.3.8";
// Arduino defined OIDs
// .iso.org.dod.internet.private (.1.3.6.1.4)
// .iso.org.dod.internet.private.enterprises (.1.3.6.1.4.1)
// .iso.org.dod.internet.private.enterprises.arduino (.1.3.6.1.4.1.36582)
//
//
// RFC1213 local values
static char locDescr[] = "Agentuino, a light-weight SNMP Agent."; // read-only (static)
static char locObjectID[] = "1.3.6.1.3.2009.0"; // read-only (static)
static uint32_t locUpTime = 0; // read-only (static)
static char locContact[20] = "Eric Gionet"; // should be stored/read from EEPROM - read/write (not done for simplicity)
static char locName[20] = "Agentuino"; // should be stored/read from EEPROM - read/write (not done for simplicity)
static char locLocation[20] = "Nova Scotia, CA"; // should be stored/read from EEPROM - read/write (not done for simplicity)
static int32_t locServices = 7; // read-only (static)
uint32_t prevMillis = millis();
char oid[SNMP_MAX_OID_LEN];
SNMP_API_STAT_CODES api_status;
SNMP_ERR_CODES status;
unsigned char outlet_values;
byte Ethernet::buffer[500]; // tcp/ip send and receive buffer
void udpSerialPrint(uint16_t dest_port, uint8_t src_ip[IP_LEN], uint16_t src_port, const char *data, uint16_t len){
Agentuino.parsePacket(dest_port, src_ip, src_port, data, len);
}
void pduReceived()
{
SNMP_PDU pdu;
int8_t outlet_command;
#ifdef DEBUG
Serial << F("UDP Packet Received Start..") << F(" RAM:") << freeMemory() << endl;
#endif
api_status = Agentuino.requestPdu(&pdu);
if ( (pdu.type == SNMP_PDU_GET || pdu.type == SNMP_PDU_GET_NEXT || pdu.type == SNMP_PDU_SET)
&& pdu.error == SNMP_ERR_NO_ERROR && api_status == SNMP_API_STAT_SUCCESS ) {
pdu.OID.toString(oid);
if (pdu.type == SNMP_PDU_GET_NEXT) {
if (strcmp_P(oid, mib2) == 0) {
strcpy_P(oid, sysDescr);
pdu.OID.fromString(oid);
} else if (strcmp_P(oid, sysDescr) == 0) {
strcpy_P(oid, sysObjectID);
pdu.OID.fromString(oid);
} else if (strcmp_P(oid, sysObjectID) == 0) {
strcpy_P(oid, sysUpTime);
pdu.OID.fromString(oid);
} else if (strcmp_P(oid, sysUpTime) == 0) {
strcpy_P(oid, sysContact);
pdu.OID.fromString(oid);
} else if (strcmp_P(oid, sysContact) == 0) {
strcpy_P(oid, sysName);
pdu.OID.fromString(oid);
} else if (strcmp_P(oid, sysName) == 0) {
strcpy_P(oid, sysLocation);
pdu.OID.fromString(oid);
} else if (strcmp_P(oid, sysLocation) == 0) {
strcpy_P(oid, sysServices);
pdu.OID.fromString(oid);
} else if (strcmp_P(oid, enterprises) == 0) {
strcpy_P(oid, outlets1);
pdu.OID.fromString(oid);
} else if (strcmp_P(oid, outlets1) == 0) {
strcpy_P(oid, outlets2);
pdu.OID.fromString(oid);
} else if (strcmp_P(oid, outlets2) == 0) {
strcpy_P(oid, outlets3);
pdu.OID.fromString(oid);
} else if (strcmp_P(oid, outlets3) == 0) {
strcpy_P(oid, outlets4);
pdu.OID.fromString(oid);
} else if (strcmp_P(oid, outlets4) == 0) {
strcpy_P(oid, outlets5);
pdu.OID.fromString(oid);
} else if (strcmp_P(oid, outlets5) == 0) {
strcpy_P(oid, outlets6);
pdu.OID.fromString(oid);
} else if (strcmp_P(oid, outlets6) == 0) {
strcpy_P(oid, outlets7);
pdu.OID.fromString(oid);
} else if (strcmp_P(oid, outlets7) == 0) {
strcpy_P(oid, outlets8);
pdu.OID.fromString(oid);
} else {
pdu.type = SNMP_PDU_RESPONSE;
pdu.error = SNMP_ERR_NO_SUCH_NAME;
Agentuino.responsePdu(&pdu);
Agentuino.freePdu(&pdu);
return;
}
pdu.type = SNMP_PDU_GET;
}
pdu.OID.toString(oid);
#ifdef DEBUG
Serial << "OID: " << oid << endl;
#endif
if ( strcmp_P(oid, sysDescr ) == 0 ) {
// handle sysDescr (set/get) requests
if ( pdu.type == SNMP_PDU_SET ) {
// response packet from set-request - object is read-only
pdu.type = SNMP_PDU_RESPONSE;
pdu.error = SNMP_ERR_READ_ONLY;
} else {
// response packet from get-request - locDescr
status = pdu.VALUE.encode(SNMP_SYNTAX_OCTETS, locDescr);
pdu.type = SNMP_PDU_RESPONSE;
pdu.error = status;
}
//
#ifdef DEBUG
Serial << F("sysDescr...") << locDescr << F(" ") << pdu.VALUE.size << endl;
#endif
} else if ( strcmp_P(oid, sysObjectID ) == 0 ) {
// handle sysObjectID (set/get) requests
if ( pdu.type == SNMP_PDU_SET ) {
// response packet from set-request - object is read-only
pdu.type = SNMP_PDU_RESPONSE;
pdu.error = SNMP_ERR_READ_ONLY;
} else {
// response packet from get-request - locDescr
status = pdu.VALUE.encode(SNMP_SYNTAX_OCTETS, locObjectID);
pdu.type = SNMP_PDU_RESPONSE;
pdu.error = status;
}
//
#ifdef DEBUG
Serial << F("sysObjectID...") << locObjectID << F(" ") << pdu.VALUE.size << endl;
#endif
} else if ( strcmp_P(oid, sysUpTime ) == 0 ) {
// handle sysName (set/get) requests
if ( pdu.type == SNMP_PDU_SET ) {
// response packet from set-request - object is read-only
pdu.type = SNMP_PDU_RESPONSE;
pdu.error = SNMP_ERR_READ_ONLY;
} else {
// response packet from get-request - locUpTime
status = pdu.VALUE.encode(SNMP_SYNTAX_TIME_TICKS, locUpTime);
pdu.type = SNMP_PDU_RESPONSE;
pdu.error = status;
}
//
#ifdef DEBUG
Serial << F("sysUpTime...") << locUpTime << F(" ") << pdu.VALUE.size << endl;
#endif
} else if ( strcmp_P(oid, sysName ) == 0 ) {
// handle sysName (set/get) requests
if ( pdu.type == SNMP_PDU_SET ) {
// response packet from set-request - object is read/write
status = pdu.VALUE.decode(locName, strlen(locName));
pdu.type = SNMP_PDU_RESPONSE;
pdu.error = status;
} else {
// response packet from get-request - locName
status = pdu.VALUE.encode(SNMP_SYNTAX_OCTETS, locName);
pdu.type = SNMP_PDU_RESPONSE;
pdu.error = status;
}
//
#ifdef DEBUG
Serial << F("sysName...") << locName << F(" ") << pdu.VALUE.size << endl;
#endif
} else if ( strcmp_P(oid, sysContact ) == 0 ) {
// handle sysContact (set/get) requests
if ( pdu.type == SNMP_PDU_SET ) {
// response packet from set-request - object is read/write
status = pdu.VALUE.decode(locContact, strlen(locContact));
pdu.type = SNMP_PDU_RESPONSE;
pdu.error = status;
} else {
// response packet from get-request - locContact
status = pdu.VALUE.encode(SNMP_SYNTAX_OCTETS, locContact);
pdu.type = SNMP_PDU_RESPONSE;
pdu.error = status;
}
//
#ifdef DEBUG
Serial << F("sysContact...") << locContact << F(" ") << pdu.VALUE.size << endl;
#endif
} else if ( strcmp_P(oid, sysLocation ) == 0 ) {
// handle sysLocation (set/get) requests
if ( pdu.type == SNMP_PDU_SET ) {
// response packet from set-request - object is read/write
status = pdu.VALUE.decode(locLocation, strlen(locLocation));
pdu.type = SNMP_PDU_RESPONSE;
pdu.error = status;
} else {
// response packet from get-request - locLocation
status = pdu.VALUE.encode(SNMP_SYNTAX_OCTETS, locLocation);
pdu.type = SNMP_PDU_RESPONSE;
pdu.error = status;
}
//
#ifdef DEBUG
Serial << F("sysLocation...") << locLocation << F(" ") << pdu.VALUE.size << endl;
#endif
} else if ( strcmp_P(oid, sysServices) == 0 ) {
// handle sysServices (set/get) requests
if ( pdu.type == SNMP_PDU_SET ) {
// response packet from set-request - object is read-only
pdu.type = SNMP_PDU_RESPONSE;
pdu.error = SNMP_ERR_READ_ONLY;
} else {
// response packet from get-request - locServices
status = pdu.VALUE.encode(SNMP_SYNTAX_INT, locServices);
pdu.type = SNMP_PDU_RESPONSE;
pdu.error = status;
}
//
#ifdef DEBUG
Serial << F("locServices...") << locServices << F(" ") << pdu.VALUE.size << endl;
#endif
} else if ( strncmp_P(oid, outlets, strlen_P(outlets)) == 0 ) {
if (pdu.OID.size != 15) {
pdu.error = SNMP_ERR_NO_SUCH_NAME;
}
if (pdu.OID.data[14] < 1 || pdu.OID.data[14] > 8) {
pdu.error = SNMP_ERR_NO_SUCH_NAME;
}
if ( pdu.type == SNMP_PDU_SET ) {
status = pdu.VALUE.decode(&outlet_command);
if (outlet_command == 1) {
setBit(pdu.OID.data[14] - 1);
updateBits();
} else if (outlet_command == 2) {
resetBit(pdu.OID.data[14] - 1);
updateBits();
}
} else {
if (outlet_values & (1 << (pdu.OID.data[14] - 1)))
outlet_command = 1;
else
outlet_command = 2;
status = pdu.VALUE.encode(SNMP_SYNTAX_INT, outlet_command);
}
pdu.type = SNMP_PDU_RESPONSE;
pdu.error = status;
//
#ifdef DEBUG
Serial << F("outlets1...") << endl;
#endif
} else {
// oid does not exist
//
// response packet - object not found
pdu.type = SNMP_PDU_RESPONSE;
pdu.error = SNMP_ERR_NO_SUCH_NAME;
}
Agentuino.responsePdu(&pdu);
}
Agentuino.freePdu(&pdu);
#ifdef DEBUG
Serial << "UDP Packet Received End.." << " RAM:" << freeMemory() << endl;
#endif
}
void setup()
{
Serial.begin(57600);
pinMode(5, OUTPUT);
pinMode(6, OUTPUT);
pinMode(7, OUTPUT);
outlet_values = swap(0);
swap(outlet_values);
if (ether.begin(sizeof Ethernet::buffer, mymac) == 0)
Serial.println(F("Failed to access Ethernet controller"));
//Serial.println("start2");
#if STATIC
ether.staticSetup(myip, gwip);
#else
if (!ether.dhcpSetup())
Serial.println(F("DHCP failed"));
#endif
//Serial.println("start3");
ether.printIp("IP: ", ether.myip);
ether.printIp("GW: ", ether.gwip);
//ether.printIp("DNS: ", ether.dnsip);
//Ethernet.begin(mac, ip);
//
api_status = Agentuino.begin();
//
if ( api_status == SNMP_API_STAT_SUCCESS ) {
//
Agentuino.onPduReceive(pduReceived);
ether.udpServerListenOnPort(&udpSerialPrint, SNMP_DEFAULT_PORT);
//
delay(10);
//
Serial << F("SNMP Agent Initalized...") << endl;
//
return;
}
//
delay(10);
//
Serial << F("SNMP Agent Initalization Problem...") << status << endl;
}
void loop()
{
// listen/handle for incoming SNMP requests
Agentuino.listen();
//ether.packetLoop(ether.packetReceive());
//
// sysUpTime - The time (in hundredths of a second) since
// the network management portion of the system was last
// re-initialized.
if ( millis() - prevMillis > 1000 ) {
// increment previous milliseconds
prevMillis += 1000;
//
// increment up-time counter
locUpTime += 100;
}
}
void setBit(unsigned char n) {
//outlet_values = swap(0);
outlet_values |= (1 << n);
swap(outlet_values);
}
void resetBit(unsigned char n) {
//outlet_values = swap(0);
outlet_values &= ~(1 << n);
swap(outlet_values);
}
void toggleBit(unsigned char n) {
//outlet_values = swap(0);
outlet_values ^= (1 << n);
swap(outlet_values);
}
void updateBits() {
digitalWrite(7, HIGH);
delayMicroseconds(5);
digitalWrite(7, LOW);
}
unsigned char swap(unsigned char inbyte) {
unsigned char outbyte;
for (unsigned char i = 0; i < 8; i++) {
if (inbyte & 0x80) {
digitalWrite(6, HIGH);
} else {
digitalWrite(6, LOW);
}
outbyte <<= 1;
outbyte |= digitalRead(4);
digitalWrite(5, HIGH);
delayMicroseconds(5);
digitalWrite(5, LOW);
inbyte <<= 1;
}
return outbyte;
}